Kangaroo word: insignia
Joey word: sign
Definitions in relation to their use in kangaroo words, taken from Google Dictionary, and edited for formatting.
insignia (noun): a badge or distinguishing mark of military rank, office, or membership of an organization.
sign (noun): an object, quality, or event whose presence or occurrence indicates the probable presence or occurrence of something else.
The letters S, I, G, and N found within the kangaroo word “insignia” arrange in the listed order to complete the joey word “sign”. While a word can have multiple definitions, in relation to their use with kangaroo words, these two words share a similar meaning: a signal.